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Full-Text Articles in Physical Sciences and Mathematics
A New Look At The Origin Of N-S Trending Young Basins Of Western Anatolia, Ömer Feyzi Gürer
A New Look At The Origin Of N-S Trending Young Basins Of Western Anatolia, Ömer Feyzi Gürer
Bulletin of the Mineral Research and Exploration
In the western Anatolia, the tectonic regime transitioned from crustal shortening to extension during Late Cenozoic time and evidence of this event was imprinted on basement lithologies and N-S and E-W oriented two distinct basin sub-types. Here, we examined the exhumation mechanism of the Menderes massif that forms the basement of these basins from a different perspective. The N-S oriented basins overlying different basement rock types were re-evaluated based on new evidence that has potential to put new constrains for interpreting the tectonic evolution of the area. Unroofing of the Menderes Massif must have developed due to compressional core complex. …
Relative Tectonic Activity Assessment Of Kütahya Graben (Western Anatolia): Insights From Geomorphic Indices, Zeynep Kezer, Erman Özsayin
Relative Tectonic Activity Assessment Of Kütahya Graben (Western Anatolia): Insights From Geomorphic Indices, Zeynep Kezer, Erman Özsayin
Turkish Journal of Earth Sciences
Western Anatolia is known as one of the most seismically active regions in the world, consistent with earthquakes having a magnitude >6.0. The deformation in the region is predominantly controlled by normal faults, which play significant role on the morphological features as well as depositional processes in related grabens. WNW-trending Kütahya Graben is located at the northeastern part of this province and bounded by several N- and S-dipping active normal fault segments. This study aims to investigate the relative tectonic activity among the fault segments of the Kütahya Graben using geomorphic indices. The analyses of this study include mountain-front sinuosity …
Alaşehir Type - Rolling Hinge Mechanism In The Northern Margin Of Büyük Menderes Graben: Evidence From Seismic Reflection And Recent Thermochronological Data, Fevzi̇ Mert Türesi̇n, Gürol Seyi̇toğlu
Alaşehir Type - Rolling Hinge Mechanism In The Northern Margin Of Büyük Menderes Graben: Evidence From Seismic Reflection And Recent Thermochronological Data, Fevzi̇ Mert Türesi̇n, Gürol Seyi̇toğlu
Turkish Journal of Earth Sciences
Isotopic and thermochronological data were recently obtained from the footwall of the Büyük Menderes detachment ranges from 29.0 ± 1.9 Ma (ZFT) to 1.6 ± 0.2 Ma (Ap U - Th / He), and they can be grouped in three different time intervals. These results are well explained by the Alaşehir type-rolling hinge mechanism, which suggests active rotated initial normal fault during successive normal fault development of the graben formation. This paper suggests that the Alaşehir type-rolling hinge mechanism is applicable to the Büyük Menderes graben by using field observations, published isotopic / thermochronological and subsurface data. It also contributes …
Earthquake History Of The Yatağan Fault (Muğla, Sw Turkey): Implications For Regionalseismic Hazard Assessment And Paleoseismology In Extensional Provinces, Mehran Basmenji, Hüsnü Serdar Akyüz, Erdem Kirkan, Murat Ersen Aksoy, Gülsen Uçarkuş, Nuretti̇n Yakupoğlu
Earthquake History Of The Yatağan Fault (Muğla, Sw Turkey): Implications For Regionalseismic Hazard Assessment And Paleoseismology In Extensional Provinces, Mehran Basmenji, Hüsnü Serdar Akyüz, Erdem Kirkan, Murat Ersen Aksoy, Gülsen Uçarkuş, Nuretti̇n Yakupoğlu
Turkish Journal of Earth Sciences
The southern part of the Western Anatolia Extensional Province is governed by E-W-trending horst-graben systems and NW-SE-oriented active faults. The NW-striking Yatağan Fault is characterised by an almost pure normal sense of motion with a minor dextral strike slip component. Although the settlements within the area have been affected by several earthquake events since ancient times (~2000 BCE), the earthquake potential and history of the Yatağan Fault has remained unknown until a few years ago. Considering the growing dense population within the area, paleoseismology studies were conducted in order to illuminate the historical earthquake activity on the Yatağan Fault. Two …
Paleoseismic History Of The Manisa Fault Zone, Western Anatolia, İsmai̇l Duran, Hasan Sözbi̇li̇r, Semi̇h Eski̇, Mustafa Softa, Hüseyi̇n Uytun, Mehmet Yüksel, Mustafa Topaksu
Paleoseismic History Of The Manisa Fault Zone, Western Anatolia, İsmai̇l Duran, Hasan Sözbi̇li̇r, Semi̇h Eski̇, Mustafa Softa, Hüseyi̇n Uytun, Mehmet Yüksel, Mustafa Topaksu
Turkish Journal of Earth Sciences
The 45-km-long, E-W to NW-SE-striking Manisa Fault Zone, which constitutes the western section of the Gediz Graben, is characterized by a pure normal sense of motion with a minor strike-slip component. Even though there are numerous historical earthquakes have been listed in Western Anatolia Graben System, a few studies have been addressed on seismic sources of the earthquakes so far. According to existing literature, the western segment of the Manisa Fault Zone is well known characterized; however, the eastern segment of it has rarely been addressed. To decipher the Holocene seismotectonic behavior of the eastern segment of Manisa Fault Zone, …
Surface Heat Flow In Western Anatolia (Turkey) And Implications To The Thermal Structureof The Gediz Graben, Eli̇f Pazvantoğlu, Kami̇l Erkan, Müjgan Şalk, Bülent Oktay Akkoyunlu, Mete Tayanç
Surface Heat Flow In Western Anatolia (Turkey) And Implications To The Thermal Structureof The Gediz Graben, Eli̇f Pazvantoğlu, Kami̇l Erkan, Müjgan Şalk, Bülent Oktay Akkoyunlu, Mete Tayanç
Turkish Journal of Earth Sciences
Knowledge of heat flow density on the Earth's surface and subsurface temperature distribution is essential for the interpretation of several processes in the crust such as for the evaluation of the geothermal potential of a region. With this study, we investigate the conductive heat flow distribution in western Anatolia to understand the thermal state and its relationship to regional tectonics in the region. The new heat flow data are collected and combined with previously published data to obtain the new heat flow map of western Anatolia. Analysis of data sets after appropriate corrections yields a better picture of the regional …
Neogene Stratigraphy And Regional Correlation Of The Çeşme Peninsula, Western Anatolia, Turkey, Fikret Göktaş
Neogene Stratigraphy And Regional Correlation Of The Çeşme Peninsula, Western Anatolia, Turkey, Fikret Göktaş
Bulletin of the Mineral Research and Exploration
This study aims to investigate the stratigraphy and regional correlation of terrestrial Neogene sediments and volcanics in the Çeşme Peninsula. Neogene deposition is represented by two main sedimentary successions separated from each other by an angular unconformity. The lacustrine dominated Çeşme group characterized the Lower-Middle Miocene deposition is formed by Şifne, Ovacık and Çiftlik formations. The felsic pyroclastics (Alaçatı pyroclastics), which are the early products of the Armağandağı volcanism, laterally associated with the Çeşme group deposition, deposited on the Şifne formation and interrupted the lacustrine sedimentation. The lacustrine sedimentation continued uninterruptedly with Ovacık and Çiftlik formations after the deposition of …
An Overview Of The Current Seismicity Of The Sultandağı Fault Zone (Afyonkarahisar-Konya, Western Anatolia), Doğan Kalafat, Yavuz Güneş, Mehmet Kara, Kıvanç Kekovali
An Overview Of The Current Seismicity Of The Sultandağı Fault Zone (Afyonkarahisar-Konya, Western Anatolia), Doğan Kalafat, Yavuz Güneş, Mehmet Kara, Kıvanç Kekovali
Bulletin of the Mineral Research and Exploration
Western Anatolia is one of the most seismically active regions in Turkey. The high seismic activity is a result of a complex tectonic deformation dominated by the N-S extensional tectonic regime in Western Anatolia. This tectonic deformation is also a result of the relative movement of the African- Arabian plates towards the north, which causes the Anatolian plate to shift 2.5 cm per year towards W-SW. One of the largest fault zones in the Western Anatolia, Sultandağı Fault Zone (SFZ) has a northwest-southeast trend. SFZ, approximately 120 km long, is an important tectonic structure, which produced three major earthquakes (Mw …
Assessment Of Element Concentrations In Surface Sediment Samples Fromsığacık Bay (Eastern Aegean), Özde Bakak, Fi̇li̇z Küçüksezgi̇n, Fai̇k Erdeni̇z Özel
Assessment Of Element Concentrations In Surface Sediment Samples Fromsığacık Bay (Eastern Aegean), Özde Bakak, Fi̇li̇z Küçüksezgi̇n, Fai̇k Erdeni̇z Özel
Turkish Journal of Earth Sciences
Concentrations of Al, Fe, As, Co, Cr, Cu, Mn, Ni, Pb, Zn, Hg, and organic carbon, and grain size distribution were investigated in the surface sediments of 7 sampling stations in the Sığacık Bay (western Anatolia) in December 2016. At all of the sampling stations, the concentrations of Pb, Ni, Cr, and As were higher than the average shale values. The highest concentrations of Pb, Cu, Zn, As, and Hg were found at stations near Doğanbey Cape. The possible sources of pollution were evaluated using several parameters: the enrichment factor (Ef), contamination factor (Cf), and contamination degree (Cd). The Ef …
New Geosite Candidates From Urla (İzmir, Western Anatolia, Turkey): A List Of Geologicalassets Nested With Antique And Modern Cultural Heritage, Ökmen Sümer, Mehmet Akbulut, Hülya İnaner
New Geosite Candidates From Urla (İzmir, Western Anatolia, Turkey): A List Of Geologicalassets Nested With Antique And Modern Cultural Heritage, Ökmen Sümer, Mehmet Akbulut, Hülya İnaner
Turkish Journal of Earth Sciences
The Urla Basin is an approximately 20 km wide and 30 km long N-S-trending strike-slip basin, located in the westernmost part of the Western Anatolia Extensional Province. Although the basin-fill units are generally composed of sedimentary and volcanic rocks of Miocene to Recent, Triassic and Late Cretaceous-Paleocene sedimentary rocks are also exposed in the middle and western part of the basin. In addition to this geological diversity, the basin hosts many ancient settlements due to its geographical position and close contact with the Aegean Sea. This study mostly focuses on the northern part of the basin with a concentration on …
Holocene Seismic Activity Of The Priene?Sazlı Fault Revealed By Cosmogenic 36cl,Western Anatolia, Turkey, Nasim Mozafari Amiri, Ökmen Sümer, Dmitry Tikhomirov, Susan Ivy-Ochs, Vasily Alfimov, Christof Vockenhuber, Uğur İnci̇, Hasan Sözbi̇li̇r, Naki̇ Akçar
Holocene Seismic Activity Of The Priene?Sazlı Fault Revealed By Cosmogenic 36cl,Western Anatolia, Turkey, Nasim Mozafari Amiri, Ökmen Sümer, Dmitry Tikhomirov, Susan Ivy-Ochs, Vasily Alfimov, Christof Vockenhuber, Uğur İnci̇, Hasan Sözbi̇li̇r, Naki̇ Akçar
Turkish Journal of Earth Sciences
Fault scarps in carbonates are structures well suited to 36Cl analysis of paleoearthquakes to reconstruct the seismic history using cosmogenic 36Cl. In this study, we measured cosmogenic 36Cl concentrations in 117 samples along one of the active faults in Western Anatolia, the Priene?Sazlı Fault scarp, to reconstruct the age of paleoearthquakes along with their slip amounts, beyond the available historical and instrumental archives. Our results indicate four periods of high seismic activity on the Priene?Sazlı Fault since the early Holocene at 8.1 ± 2.0, 6.0 ± 1.5, 3.7 ± 0.9, and 2.2 ± 0.5 ka, with slips of 3.4 ± …
Application Of Tilt Angle Method To The Bouguer Gravity Data Of Western Anatolia, Fikret Doğru, Oya Pamukçu, İlkin Özsöz
Application Of Tilt Angle Method To The Bouguer Gravity Data Of Western Anatolia, Fikret Doğru, Oya Pamukçu, İlkin Özsöz
Bulletin of the Mineral Research and Exploration
In this study, tilt angle method was applied to Western Anatolia gravity data in order to estimate edges of the geological structures. Tilt angle was obtained in two different ways by using gravity and its vertical derivative. In potential field methods, tilt angle technique is expressed as the ratio of vertical derivative to horizontal derivatives of anomaly. In the tilt angle map, 0° contours defines structure edges, half of the distance between ±45° defines depth of upper structure. In the field work of the study, gravity data, which was measured in Western Anatolia, was used to obtain regional anomaly maps …
Geochemical Characteristics And Rare-Earth Element Distributions Of Kozbudaklar W-Skarn Deposit (Bursa, Western Anatolia), Ayşe Orhan, Halim Mutlu
Geochemical Characteristics And Rare-Earth Element Distributions Of Kozbudaklar W-Skarn Deposit (Bursa, Western Anatolia), Ayşe Orhan, Halim Mutlu
Bulletin of the Mineral Research and Exploration
The Kozbudaklar W-skarn deposit occurs along the contact between Eocene Topuk Granitoid and Triassic İnönü Marble in Tavşanlı Zone. In the study area, the endoskarn is represented by plagioclase-pyroxene and exoskarn zone which is characterized by pyroxene, pyroxene-garnet, garnet and garnet-pyroxene skarn facies. According to major oxide element contents, exoskarn is of calcic character. In pyroxene and pyroxene-garnet skarn facies, tungsten and molybdenum abundances vary between 434-5507 ppm (mean 2330 ppm) and 8 - 90 ppm (mean 40 ppm). In the garnet and garnet-pyroxene skarns, concentrations of these elements are 271 - 7616 ppm (mean 2486 ppm) and 7 - …
Distribution Of Natural Radioactivity And Assessment Of Radioactive Dose Of Western Anatolian Plutons, Turkey, Argyrios Papadopoulos, Şafak Altunkaynak, Antonis Koroneos, Alp Ünal, Ömer Kamaci
Distribution Of Natural Radioactivity And Assessment Of Radioactive Dose Of Western Anatolian Plutons, Turkey, Argyrios Papadopoulos, Şafak Altunkaynak, Antonis Koroneos, Alp Ünal, Ömer Kamaci
Turkish Journal of Earth Sciences
The distribution of 226Ra, 232Th, and 40K in 70 granite samples obtained from 13 Western Anatolian plutons (Turkey) was measured by using γ-ray spectroscopy. The activities of the measured radionuclides varied up to 259 Bq kg-1 for 226Ra, up to 241 Bq kg?1 for 232Th, and up to 2518 Bq kg-1 for 40K, with mean values of 66 (±44), 90 (±47), and 1097 (±410) Bq kg-1, respectively, which are smaller than the mean values given for granites worldwide. The mean value of the increase on the external γ-radiation effective dose rate is 0.21 (±0.09) mSv year-1, varying by <1 mSv year-1. The mean value of the internal α-radiation was 0.15 (±0.10) mSv year-1, varying <0.5 mSv year-1. Most of the samples cause an increase to both the external and internal dose by <30%, which is smaller than the permitted limit. Therefore, there is no radiological risk from the usage of the samples studied as decorative and ornamental building materials.
Coeval Shoshonitic-Ultrapotassic Dyke Emplacements Within The Kestanbol Pluton, Ezine – Biga Peninsula (Nw Anatolia), Cüneyt Akal
Coeval Shoshonitic-Ultrapotassic Dyke Emplacements Within The Kestanbol Pluton, Ezine – Biga Peninsula (Nw Anatolia), Cüneyt Akal
Turkish Journal of Earth Sciences
The Biga Peninsula, in the north-western part of Western Anatolia, is part of the Sakarya Zone of the Western Pontides and the tectonically overlying Ezine group. The basement rocks are intruded by the early Miocene Kestanbol Pluton and early to middle Miocene calc-alkaline to shoshonitic-ultrapotassic volcanic successions related to postcollisional continental extension. The Kestanbol Pluton mainly comprises monzonite and granodiorite and is cut by shoshonitic-ultrapotassic tephriphonolite dykes. ^{40}Ar-^{39}Ar ages of biotite (21.22 ± 0.09 Ma) and leucite (22.21 ± 0.07 Ma) crystals indicate that tephriphonolite dyke emplacement was coeval with the intrusion of the Kestanbol Pluton during the early Miocene …
Neotectonic Evolution Of An Actively Growing Superimposed Basin In Western Anatolia: The Inner Bay Of İzmir, Turkey, Bora Uzel, Hasan Sözbi̇li̇r, Çağlar Özkaymak
Neotectonic Evolution Of An Actively Growing Superimposed Basin In Western Anatolia: The Inner Bay Of İzmir, Turkey, Bora Uzel, Hasan Sözbi̇li̇r, Çağlar Özkaymak
Turkish Journal of Earth Sciences
İzmir Bay is an actively growing shallow marine basin controlled by active faults trending NE, NW, N-S and E-W, in the West Anatolian Extensional Province. The bay of İzmir is a lazy L-shaped superimposed basin which is topographically divided into an E-W-trending inner bay and a NW-trending outer bay. The Inner Bay of İzmir is an asymmetric graben structure approximately 5-7 km wide and 25 km long containing (i) upper Cretaceous-Palaeocene basement, (ii) an older succession of lower to upper Miocene basin fill, overlain with angular unconformity by (iii) a younger Plio-Quaternary basin fill. The older succession contain a 0.5- …
Geological And Palaeoseismological Evidence For Late Pleistocene−Holocene Activity On The Manisa Fault Zone, Western Anatolia, Çağlar Özkaymak, Hasan Sözbi̇li̇r, Bora Uzel, Hüsnü Serdar Akyüz
Geological And Palaeoseismological Evidence For Late Pleistocene−Holocene Activity On The Manisa Fault Zone, Western Anatolia, Çağlar Özkaymak, Hasan Sözbi̇li̇r, Bora Uzel, Hüsnü Serdar Akyüz
Turkish Journal of Earth Sciences
In West Anatolia near the cities of İzmir and Manisa, the historical occurrence of large earthquakes suggests the presence of important seismogenic faults. However, these faults have yet to be investigated in detail. The Manisa Fault Zone (MFZ) is an active large-scale normal fault system in this area, and thus field observations and palaeoseismological studies of this zone are important for predicting future earthquakes. Hence we sought to document geological and palaeoseismological evidence for Holocene activity on the MFZ. We performed trenching to determine the magnitude and timing of past surface-faulting events using detailed fault-trace mapping, measurements of Upper Pleistocene-Lower …
Empirical Attenuation Relationships For Western Anatolia, Turkey, Ni̇hal Akyol, Özlem Karagöz
Empirical Attenuation Relationships For Western Anatolia, Turkey, Ni̇hal Akyol, Özlem Karagöz
Turkish Journal of Earth Sciences
Seismic hazard studies have become progressively more important for earthquake engineering applications in western Anatolia, which contains one of the world’s best examples of a rapidly extending intra-continental tectonic regime. A two-stage regression analysis was applied to peak ground acceleration and 5%-damped spectral acceleration values of 168 recordings from 49 earthquakes in order to develop empirical attenuation relationships which can be used to predict ground motion for western Anatolia. Moment magnitudes for earthquakes range between 4.0 and 6.4 while the hypocentral distances range between 15 and 200 km in our dataset. Site classifications, as one of the predictor variables for …
Statistical Earthquake Frequency Analysis For Western Anatolia, Esi̇n Fi̇ruzan
Statistical Earthquake Frequency Analysis For Western Anatolia, Esi̇n Fi̇ruzan
Turkish Journal of Earth Sciences
In order to apply a statistical earthquake frequency analysis to western Anatolia, the area has been restricted within coordinates 36.50º-40º North and 26.00º-30.00º East. Data used in the analysis belong to the instrumental period from 1.1.1900 to 10.11.2006 (Ms ≥ 4.0). The earthquake record was assumed to be representative of longer periods and the possibility of clusters of seismicity or of extreme magnitude events were ignored. The study area has been divided into eight zones with different seismotectonic properties. All computations have been performed for these zones separately. The earthquake magnitude series is termed as the instantaneous peak over the …
Isostatic Compensation In Western Anatolia With Estimate Of The Effective Elastic Thickness, Oya Pamukçu, Ayça Yurdakul
Isostatic Compensation In Western Anatolia With Estimate Of The Effective Elastic Thickness, Oya Pamukçu, Ayça Yurdakul
Turkish Journal of Earth Sciences
Isostasy is concerned with how the crust and mantle adjusts to shifting loads of limited spatial and temporal dimensions. By analysing the frequency content of gravity and topography data, it has been possible to determine the compensation scheme of a region. In this study, the compensation mechanism of the Western Anatolia, which has dynamic loads, was investigated by isostatic response functions. Effective elastic thickness in Western Anatolia region was estimated based on admittance and coherence between gravity and topography data. The two most reliable indicators of lithospheric strength are the focal depth distribution of earthquakes and relation of gravity anomalies …
A First Record Of A Strike-Slip Basin In Western Anatolia And Its Tectonic Implication: The Cumaovası Basin, Bora Uzel, Hasan Sözbi̇li̇r
A First Record Of A Strike-Slip Basin In Western Anatolia And Its Tectonic Implication: The Cumaovası Basin, Bora Uzel, Hasan Sözbi̇li̇r
Turkish Journal of Earth Sciences
The Cumaovası basin, formerly known as the Çubukludağ Graben, is located at the western end of Gediz and Küçük Menderes grabens in the west Anatolian extensional province. It is 5-17-km wide and 35-km-long, NNE-SSW-trending, asymmetric basin that was formed under the control of strike-slip and oblique-slip normal faults. The basin contains two different infills that are separated by an angular unconformity: (1) an ancient basin fill consisting of Lower Miocene-Lower Pliocene sequences which accumulated in a fluvio-lacustrine depositional setting, and deformed by NE-SW-trending strike-slip faulting; and (2) a modern basin fill consisting of Plio-Quaternary units that are controlled by synchronous …
Stratigraphy And Geochemical Features Of The Early Miocene Bimodal (Ultrapotassic And Calc-Alkaline) Volcanic Activity Within The Ne-Trending Selendi Basin, Western Anatolia, Turkey, Yalçin Ersoy, Cahi̇t Helvaci
Stratigraphy And Geochemical Features Of The Early Miocene Bimodal (Ultrapotassic And Calc-Alkaline) Volcanic Activity Within The Ne-Trending Selendi Basin, Western Anatolia, Turkey, Yalçin Ersoy, Cahi̇t Helvaci
Turkish Journal of Earth Sciences
Western Anatolia has experienced thickening and orogenic collapse subsequent to the Eocene continent-arc collision. The early stage of the post-collisional volcanism in the region was thought to have produced widespread lavas and pyroclastic deposits of calc-alkaline basaltic andesite to rhyolite composition. However, in the Selendi Basin, one of the NE-trending basins in western Anatolia, there are two distinct volcanic unit compositions associated with the Lower Miocene sedimentary rocks: (1) a calc-alkaline, high-potassic felsic unit; and (2) alkaline, ultrapotassic lamproitic units, i.e. both are bimodal in character. The calc-alkaline felsic volcanic rocks (Eğreltidağ volcanic unit) are composed of wide-spread pyroclastic rocks …
Mineral-Chemical Constraints On The Miocene Calc-Alkaline And Shoshonitic Volcanic Rocks Of Western Turkey: Disequilibrium Phenocryst Assemblages As Indicators Of Magma Storage And Mixing Conditions, Ercan Aldanmaz
Turkish Journal of Earth Sciences
Early to Middle Miocene (22 to 15 Ma) volcanic activity across western Turkey produced a series of lavas and pyroclastic deposits with calc-alkaline and shoshonitic affinities. The erupted magmas show a broad range of compositions from basaltic to rhyolitic (48-75 SiO2 wt%) and are composed of variable phenocryst assemblages. Petrographic and mineral-chemical characteristics suggest that the magmas underwent hydrous crystallization in deep crustal magma chambers that was dominated by plagioclase + pyroxene + pargasitic amphibole fractionation. Subsequent crystallization in shallower magma chambers followed two different trends: (1) anhydrous (pyroxene + plagioclase-dominated); and (2) hydrous (plagioclase + edenitic amphibole + pyroxene-dominated). …
Petrography And Geochemistry Of Paragneisses In The Çine Submassif Of The Menderes Massif, Western Anatolia, Firat Şengün, Osman Candan, O. Özcan Dora, O. Ersi̇n Koralay
Petrography And Geochemistry Of Paragneisses In The Çine Submassif Of The Menderes Massif, Western Anatolia, Firat Şengün, Osman Candan, O. Özcan Dora, O. Ersi̇n Koralay
Turkish Journal of Earth Sciences
The Menderes Massif, which covers a large area in western Turkey, is made up of Pan-African basement rocks and a Palaeozoic to Early Tertiary cover sequence. The study area is located in the Dalama and Hallaçlar (Aydın) area, in the northern and central parts of the Çine submassif of the Menderes Massif. The oldest units of the Pan-African basement are metaclastics, consisting of paragneisses and mica schists that gradually and conformably overlay paragneisses. Macroscopic appearances and mineralogical and textural data indicate that paragneisses can be subdivided into four subgroups. These are: (1) black spotted, (2) white spotted, (3) massive, grey-coloured …
Stratigraphic And Palaeoenvironmental Significance Of Bartonian–Priabonian (Middle–Late Eocene) Microfossils From The Başçeşme Formation, Denizli Province, Western Anatolia, M. Serkan Akki̇raz, Funda Akgün, Sefer Örçen, Angela Bruch, Volker Mosbrugger
Stratigraphic And Palaeoenvironmental Significance Of Bartonian–Priabonian (Middle–Late Eocene) Microfossils From The Başçeşme Formation, Denizli Province, Western Anatolia, M. Serkan Akki̇raz, Funda Akgün, Sefer Örçen, Angela Bruch, Volker Mosbrugger
Turkish Journal of Earth Sciences
This study explains the stratigraphical and palaeoenvironmental significance of Bartonian-Priabonian (Middle-Late Eocene) fossils, the fauna and flora obtained from the Başçeşme formation of the Çardak-Tokça basin (western Anatolia). The studied sequence is an outcrop from the Başçeşme formation, deposited in a shallow-marine to coastal environment without stratigraphic breaks. Forty genera and 58 species have been recognized in the palynological assemblage of the Başçeşme formation. A well-preserved diverse palynomorph and foraminiferal assemblages yield the Middle-Late Eocene age for the Başçeşme formation. In western Anatolia, mangrove elements Nypa and Pelliciera have been first recorded in this study. The pollen of Mauritia and …
Geotectonic Setting And Origin Of The Youngest Kula Volcanics (Western Anatolia), With A New Emplacement Model, Murat Tokçaer, Samuele Agostini, Mehmet Yilmaz Savaşçin
Geotectonic Setting And Origin Of The Youngest Kula Volcanics (Western Anatolia), With A New Emplacement Model, Murat Tokçaer, Samuele Agostini, Mehmet Yilmaz Savaşçin
Turkish Journal of Earth Sciences
The Quaternary Kula volcanics are Na-dominant in character while all the older volcanic rocks of western Anatolia are generally definitive K-dominant rocks. As a unique example in western Anatolia, the existence of a huge amount of plateau basalts at Kula indicates rapid uplift of mantle material, as confirmed by new geochemical data. Based on our field observations, the oldest Kula volcanics are the plateau basalts with more than one main lava flow. At the beginning of volcanic activity (first-period plateau basalts), this plateau was vast. Subsequently, parts of the first-period plateau basalts were uplifted and partly eroded while other parts …
The Problem Of The Core-Cover Boundary Of The Menderes Massif And An Emplacement Mechanism For Regionally Extensive Gneissic Granites, Western Anatolia (Turkey), Burhan Erdoğan, Tali̇p Güngör
The Problem Of The Core-Cover Boundary Of The Menderes Massif And An Emplacement Mechanism For Regionally Extensive Gneissic Granites, Western Anatolia (Turkey), Burhan Erdoğan, Tali̇p Güngör
Turkish Journal of Earth Sciences
In previous studies, the stratigraphy of the Menderes Massif was divided into a Precambrian core and Mesozoic cover associations, the core consisting of gneissic granites and high-grade schists and the cover of mica schists and platform-type marbles. It has also been proposed that the two associations are separated by an unconformity although nowhere is this relation clearly observed. In this study, the Bafa and Kavaklıdere areas in the southern part of the massif have been examined. In the Bafa area, Mesozoic mica schists with marble lenses occur in the lowermost parts of the sequence and are overlain, along a gradational …
Geology And Hydrothermal Alteration Of The Aydın-Salavatlı Geothermal Field, Western Anatolia, Turkey, İsmai̇l Hakki Karamanderesi̇, Cahi̇t Helvaci
Geology And Hydrothermal Alteration Of The Aydın-Salavatlı Geothermal Field, Western Anatolia, Turkey, İsmai̇l Hakki Karamanderesi̇, Cahi̇t Helvaci
Turkish Journal of Earth Sciences
The Aydın-Salavatlı geothermal field is located in the middle part of the Büyük Menderes Graben, and is characterized by normal-fault structures. The stratigraphic sequence of the Aydın-Salavatlı geothermal field consists of metamorphic rocks of the Menderes Massif and sedimentary rocks deposited during the rifting period of the Menderes Massif in the Miocene. Geological data suggest that there is a connection between tectonic development and periods of hydrothermal alteration. Hydrothermal alteration in the Aydın-Salavatlı geothermal field occurred in five distinct periods, and all are related to different stages of faulting systems, from the Middle Miocene up to the present. The first …